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Q Q
3 7 6 3 1 5 1 5 0
• IC Block Diagrams
IC1 CXA2596M
APC PD AMP
+
HOLD
1
–
VCC
VEE
+
–
AGCVTH
2
VEE
+
+
–
APC LD AMP
–
LD
3
VCC
VC
PD
4
+
–
A
5
+
+
–
–
B
6
+
–
VEE
C
7
VC
+
VC
+
–
–
D
8
RF SUMMING AMP
RF EQ AMP
VC
T E
L
1 3 9 4 2 2 9 6 5 1 3
VEE
9
VEE
ERROR AMP
VC
FOCUS
+
–
+
VC
–
F
10
E
11
–
+
VC
VC
VC BUFFER
VCC
VC
12
+
VEE
–
VC
IC601 BA8270F
BUS ON
14
VCC
BUS ON
1
SWITCH
RESET
RST
2
13
RST
SWITCH
12
BUS ON
11
CLK IN
BATTERY
w w w
BATT
3
10
BU IN
SWITCH
CLK
4
VREF
5
DATA
6
9
DATA IN
GND
7
8
DATA OUT
IC7 LA6556L-TE-L
VCC
24
VCC
FWD
1
INPUT
REV
2
23 LC/PD
VCC2
3
22 LD ON
VL0–
4
21 HOLD SW
VL0+
5
VO4+
6
20 AGCCONT
VO4–
7
VC
19 RF BOT
VO3+
8
18 RFTC
VO3–
9
17 RF I
16 RFO
VO2+
10
VO2–
11
15 RFE
VO1+
12
14 FE
VO1–
13
–
+
13 TE
VCC1
14
TRACKING
ERROR AMP
VC
VIN1
15
VIN1–A
16
AMP-A
–
VIN1+A
17
+
VIN1–B
18
–
+
AMP-B
IC504 RN5VD33AA-TL
5
x
a o
y
RESET
.
i
1
2
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GND
36
S-GND
CH2-CH4 OUTPUT
35 MUTE2
MUTE2
ON/OFF
CH1 OUTPUT
34 MUTE1
MUTE1
ON/OFF
33 VIN4
OUTPUT
CONTROL
32 VIN4–
+
–
31 VIN4+
LEVEL
SHIFT
30 VREF-IN
29 VIN1 (VREF)-SW
VIN1/VREF SW
LEVEL
SHIFT
28 VREF-OUT (CH1)
–
+
5V REG
+
Q
Q
–
3
7
6
27 REG-OUT
LEVEL
SHIFT
26 REG-IN
25 VIN3+
+
LEVEL
–
SHIFT
24 VIN3–
23 VIN3
22 VIN2+
–
+
+
–
21 VIN2–
20 VIN2
19 VIN1 +B
4
u 1 6 3
.
3
50
50
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2
4
8
9
9
IC201 SAA6588T/V2-118
20
19
18
17
MULTI
PATH
57kHz
DETECTOR
8th ORDER
BAND-PASS FILTER
CLOCKED
SIGNAL QUALITY
COMPARATOR
DECODER
CLOCK
RDS/RDBS
RDS/RDBS
DEMODULATOR
DECODER
DATA
TEST
OSCILLATOR
CONTROL
& CLOCK
1
2
3
4
5
6
7
8
3
1
5
1
5
0
8
9
2
IC302 TL5001CDR
4
3
2
U.V.L.O
REFERENCE
VOLTAGE
OSC
SWITCH
ERROR
+
'ON'
AMP
–
AT
'H'
S.C.P.
–
COMPARATOR 1
+
PWM
COMPARATOR
–
+
S.C.P.
COMPARATOR 2
5
6
7
m
c o
2
8
9
9
16
15
14
13
12
11
POWER SUPPLY
PAUSE
& RESET
DETECTOR
4
5
4
CLOCK
INTERFACE
DATA
REGISTER
IIC BUS SLAVE
TRANSCEIVER
9
10
4
9
8
2
9
9
1
DEAD-TIME
COMPARATOR
–
+
S.C.P.
LATCH
8
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